Method and system for remotely controlling content at a set top box

ABSTRACT

A communication system  100  is used to manage content includes a user device with a storage device  306  and a content processing system  102  in communication with the storage device and communicating content to the storage device, generating a conditional access packet, communicating the conditional access packet to a storage device. The user device  112  receives the content and the conditional access packet and controls the storage device to manage the content in response to the conditional access packet.

TECHNICAL FIELD

The present disclosure relates to a content processing and delivery system and, more specifically, to a system for managing content stored in user devices.

BACKGROUND

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

Satellite television has become increasingly popular due to the wide variety of content and the quality of content available. A satellite television system typically includes a set top box that is used to receive the satellite signals and decode the satellite signals for use on a television. The set top box typically has a memory associated therewith. The memory may include a digital video recorder or the like as well as the operating code for the set top box.

Satellite television systems typically broadcast content to a number of users simultaneously in a system. Satellite television systems also offer subscription or pay-per-view access to broadcast content. Access is provided using signals broadcast over the satellite. Once access is provided the user can access the particular content. The broadcasting of a large selection of channels and pay-per-view programs uses a considerable amount of satellite resources.

Content providers are increasingly trying to determine additional ways to provide content to users. Some content may be desired by a small number of customers. In such a case using valuable satellite resources at peak viewing times may not be cost effective. Less popular content may be broadcast by satellite at less popular viewing times, or may be available for downloading on demand via a broadband connection. Such content may be received and stored by a digital video recorder for later viewing.

Once content is stored within a user device, the system has no control of the content outside of rights provided to the set top box at the time of delivery.

SUMMARY

The present disclosure allows files to be easily managed by the system including stopping the recording of content and deleting or making the content otherwise inaccessible.

In one aspect of the disclosure, a method includes communicating content to a storage device from a content processing system, generating a conditional access packet, communicating the conditional access packet to a storage device, receiving the content and the conditional access packet and controlling the storage device to manage the content in response to the conditional access packet.

In a further aspect of the disclosure, a communication system includes a user device comprising a storage device and a content processing system in communication with the storage device and communicating content to the storage device, generating a conditional access packet, communicating the conditional access packet to a storage device. The user device receives the content and the conditional access packet and controls the storage device to manage the content in response to the conditional access packet.

Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.

DRAWINGS

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.

FIG. 1 is a schematic illustration of a communication system according to the disclosure.

FIG. 2 is a detailed block diagrammatic view of the content processing system of FIG. 1.

FIG. 3 is a detailed block diagrammatic view of the fixed user device of FIG. 1.

FIG. 4 is a representational view of a conditional access packet formed according to the present disclosure.

FIG. 5 is a flowchart of a method for operating the present disclosure.

DETAILED DESCRIPTION

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the term module refers to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality. As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A or B or C), using a non-exclusive logical OR. It should be understood that steps within a method may be executed in different order without altering the principles of the present disclosure.

The following system is described with respect to a satellite system and a broadband system. The broadband distribution system may be implemented in a cable or telephone-type system. An optical fiber may also be used in the broadband system. Wireless distribution may also be used in the broadband distribution system.

While the following disclosure is made with respect to example DIRECTV® broadcast services and systems, it should be understood that many other delivery systems are readily applicable to disclosed systems and methods. Such systems include other wireless distribution systems, wired or cable distribution systems, cable television distribution systems, Ultra High Frequency (UHF)/Very High Frequency (VHF) radio frequency systems or other terrestrial broadcast systems (e.g., Multi-channel Multi-point Distribution System (MMDS), Local Multi-point Distribution System (LMDS), etc.), Internet-based distribution systems, cellular distribution systems, power-line broadcast systems, any point-to-point and/or multicast Internet Protocol (IP) delivery network, and fiber optic networks. Further, the different functions collectively allocated among a head end (HE), integrated receiver/decoders (IRDs) and a content delivery network (CDN) as described below can be reallocated as desired without departing from the intended scope of the present patent.

Further, while the following disclosure is made with respect to the delivery of video (e.g., television (TV), movies, music videos, etc.), it should be understood that the systems and methods disclosed herein could also be used for delivery of any media content type, for example, audio, music, data files, web pages, etc. Additionally, throughout this disclosure reference is made to data, information, programs, movies, assets, video data, etc., however, it will be readily apparent to persons of ordinary skill in the art that these terms are substantially equivalent in reference to the example systems and/or methods disclosed herein. As used herein, the term title will be used to refer to, for example, a movie itself and not the name of the movie.

Referring now to FIG. 1, a communication system 100 includes a content processing system 102 that is used as a processing and transmission source, a plurality of content providers, one of which is shown at reference numeral 104 and a first satellite 106. A second satellite 108 may also be incorporated into the system. The satellites 106, 108 may be used to communicate different types of information or different portions of various contents from the content processing system 102. The system 100 also includes a plurality of fixed user devices 110 such as integrated receiver/decoders (IRDs). Wireless communications are exchanged between the content processing system 102 and the fixed user devices 110 through one or more of the satellites 106, 108. The wireless communications may take place at any suitable frequency, such as, for example, Ka band and/or Ku-band frequencies.

A mobile user device 112 may also be incorporated into the system. The mobile user device 112 may include, but is not limited to, a cell phone 114, a personal digital assistant 116, a portable media player 118, a laptop computer 120, or a vehicle-based device 122. It should be noted that several mobile devices 112 and several fixed user devices 110 may be used in the communication system 100. The mobile devices 112 may each have a separate antenna generally represented by antenna 124.

In addition to communication via the satellites 106, 108, various types of information such as security information, encryption-decryption information, content, or content portions may be communicated terrestrially. A communication network 132 such as the public switched telephone network (PSTN), a terrestrial wireless system, stratospheric platform, an optical fiber, or the like may be used to terrestrially communicate with the fixed user device 110 or the mobile user device 112. To illustrate the terrestrial wireless capability an antenna 134 is illustrated for wireless terrestrial communication to the mobile user device 112.

Information or content provided to content processing system 102 from the media source 104 may be transmitted, for example, via an uplink antenna 138 to the satellite(s) 106,108, one or more of which may be a geosynchronous or geo-stationary satellite, that, in turn, rebroadcast the information over broad geographical areas on the earth that include the user devices 110, 112. The satellites may have inter-satellite links as well. Among other things, the example content processing system 102 of FIG. 1 provides program material to the user devices 110, 112 and coordinates with the user devices 110, 112 to offer subscribers pay-per-view (PPV) program services and broadband services, including billing and associated decryption of video programs. Non-PPV (e.g. free or subscription) programming may also be received. To receive the information rebroadcast by satellites 106, 108, each for user device 110 is communicatively coupled to a receiver or downlink antenna 140.

Security of assets broadcast via the satellites 106, 108 may be established by applying encryption and decryption to assets or content during content processing and/or during broadcast (i.e., broadcast encryption). For example, an asset can be encrypted based upon a control word (CW) known to the content processing system 102 and known to the user devices 110, 112 authorized to view and/or playback the asset. In the illustrated example communication system 100, for each asset the content processing system 102 generates a control word packet (CWP) that includes, among other things, a time stamp, authorization requirements and an input value and then determines the control word (CW) for the asset by computing a cryptographic hash of the contents of the CWP. The control word packet may also be referred to as a conditional access packet (CAP). The CWP is also broadcast to the user devices 110, 112 via the satellites 106, 108. The user devices authorized to view and/or playback the broadcast encrypted asset will be able to correctly determine the CW by computing a cryptographic hash of the contents of the received CWP. If the user device 110 is not authorized, the IRD 110 will not be able to determine the correct CW that enables decryption of the received broadcast encrypted asset. The CW may be changed periodically (e.g., every 30 seconds) by generating and broadcasting a new CWP. In an example, a new CWP is generated by updating the timestamp included in each CWP. Alternatively, a CWP could directly convey a CW either in encrypted or unencrypted form. Other examples of coordinated encryption and decryption abound, including for example, public/private key encryption and decryption.

The CWP or CAP may also contain a command or code recognized by the user device or storage device so that a specific action is performed. For example, ending or discontinuing the receiving of content or deleting content may be performed. The CWP or CAP may be targeted for all user devices or selected devices. When deleting content, the content may be identified with a material identification that is formed as part of the CAP or CWP. An operator or system may identify the material using the material identification, then the CAP or CWP may be formed therefrom. The CAP may also include a code that is recognized by the storage device or user device to delete or stop recording of a particular content.

Referring now to FIG. 2, the content processing system 102 of FIG. 1 is illustrated in further detail. The content provider 104 may include various types of content providers, including those that provide content by way of a satellite 200, DVD 202, via a network as a file in 204, by way of tapes and other means. The content provider 104 may also provide a content description and other metadata 208 to the system. An input server 212 may receive the various content and associated metadata and convert the format in a format conversion system 214. A house format asset storage server 216 may be used to store the content asset in a house format. Still image files, trailers, and other information may also be stored in the house format asset storage server. A workflow management system 220 is used to control the format conversion system 214 and the server 212. Also, the workflow management system 220 is coupled to the house format asset storage server 216 and performs ingest control. The house format asset storage server 216 provides still images to a content management system 221 and house format file, video and audio files to the video transport processing system 223.

The VTPS 223 may encode the packets containing the content. The encoder may encode the data into various transport formats such as DIRECTV® proprietary formats, or industry standard formats. The encoded data is then packetized into a stream of data packets by a packetizer 270 that also attaches a header to each data packet to facilitate identification of the contents of the data packet such as, for example, a sequence number that identifies each data packet's location within the stream of data packets (i.e., a bitstream). The header also includes a program identifier (PID) (e.g., a service channel identifier (SCID)) that identifies the program to which the data packet belongs.

The stream of data packets (i.e., a bitstream) is then broadcast encrypted by, for example, the well-known Advanced Encryption Standard (AES) or the well-known Data Encryption Standard (DES). In an example, only the payload portion of the data packets are encrypted thereby allowing a user device 110 to filter, route and/or sort received broadcast encrypted data packets without having to first decrypt the encrypted data packets.

The content management system 221 generally controls the overall movement and distribution of contents through the content processing system 102.

A licensing and contract information 222 and ads from ad sales 224 may be provided to the content management system 221. That is, licensing information, tier assignments, pricing and availability may be provided to the content management system. Asset information, file names and durations may be exchanged between the content management system 221 and the workflow management system 220. The asset information, such as file names and durations, may be determined at the server 212 that is coupled to the workflow management system 220.

The Content Management System (CMS) 221 in combination with the SPS (230) is used to provide the requested channel, program associated data (PAD), channel information and program information packets (PIPs). The CMS 221 may schedule content processing for a plurality of received assets based on a desired program lineup to be offered by the communication system 100. For example, a live TV program for which a high demand for reruns might be expected could be assigned a high priority for content processing.

A schedule PAD server (SPS) 230 may be coupled to the CMS and is used to generate a broadband video PAD that is communicated to a conditional access system for broadband video 232. The conditional access system for broadband video 232 may be used to generate control words and control word packet (or CAPs) in pairs and provide those to the video transport processing system 223.

In the illustrated example of FIG. 2, users of the user devices 110 (of FIG. 1) are charged for subscription services and/or asset downloads (e.g., PPV TV) and, thus, the content processing system 102 includes a billing system 234 to track and/or bill subscribers for services provided by the system 100. For example, the billing system 234 records that a user has been authorized to download a movie and once the movie has been successfully downloaded the user is billed for the movie. Alternatively, the user may not be billed unless the movie has been viewed.

A billing system 234 receives pricing and availability information from the content management system 221. A conditional access system 236 receives callback information from the communication network 132. The conditional access system may be used to generate authorizations, pay-per-view billing data, and callback data from the billing system 234. Remote record requests may also be provided from the conditional access transaction system 238. A conditional access system BCC 240 may be used to generate a conditional access packet (CAP) from the information from the conditional access system 236.

The CAP may include a material identification, a user device identification and a code to control a storage device or user device.

The billing system 234 may generate purchase data that is provided to the enterprise integration (EI) block 242. The enterprise integration block 242 may generate remote record requests to the conditional access transaction system 238. Remote record requests may be generated through a web interface such as DIRECTV.com® in block 244. Various ordering information, such as ordering broadband video, pay-per-view, and various services may be received at the web interface 244. Various trailers may also be accessed by the users through the web interface 244 provided from the house format asset storage server 216. Enterprise integration block 242 may also receive guide information and metadata from the content management system 221.

Titles, description and various categories from the content management system 221 may be provided to the advanced program guide system 248. The program guide system 248 may be coupled to a satellite broadcasting system such as a broadcast transport processing system 250 that broadcasts content to the users through the satellite 106, 108.

The program guide data generated by the program guide system 248 may include information that is used to generate a display of guide information to the user, wherein the program guide may be a grid guide and informs the user of particular programs that are broadcast on, particular channels at particular times. A program guide may also include information that a user device uses to assemble programming for display to a user. For example, the program guide may be used to tune to a channel on which a particular program is offered. The program guide may also contain information for tuning, demodulating, demultiplexing, decrypting, depacketizing, or decoding selected programs.

Content files may also be provided from the content management system 221 to the content distribution system 260.

Referring back to the video transport processing system 223, the video transport processing system 223 includes a transport packaging system 270. The transport processing system 270 creates pre-packetized unencrypted files. An encryption module 272 receives the output of the transport processing system and encrypts the packets. Fully packaged and encrypted files may also be stored in the content repository 274. Encryption may take place in the data portion of a packet and not the header portion.

One or more content delivery networks 280 may be used to provide content files such as encrypted or unencrypted and packetized files to the communication network 132 for distribution to the user devices 110, 112. The content distribution system 260 may make requests for delivery of the various content files and assets through the communication network 132. The content distribution system 260 also generates satellite requests and broadcasts various content and assets through the broadcast transport processing system 250.

The communication network 132 may be the Internet 122 which is a multiple-point-to-multiple-point communication network. However, persons of ordinary skill in the art will appreciate that point-to-point communications may also be provided through the communication network 132. For example, downloads of a particular content file from a content delivery network may be communicated to a particular user device. Such file transfers and/or file transfer protocols are widely recognized as point-to-point communications or point-to-point communication signals and/or create point-to-point communication paths, even if transported via a multi-point-to-multi-point communication network such as the Internet. It will be further recognized that the communication network 132 may be used to implement any variety of broadcast systems where a broadcast transmitter may transmit any variety of data or data packets to any number of or a variety of clients or receivers simultaneously. Moreover, the communication network 132 may be used to simultaneously provide broadcast and point-to-point communications and/or point-to-point communication signals from a number of broadcast transmitters or content delivery networks 280.

The content delivery network 280 may be implemented using a variety of techniques or devices. For instance, a plurality of Linux-based servers with fiber optic connections may be used. Each of the content delivery networks 280 may include servers that are connected to the Internet or the communication network 132. This allows the user devices to download information or content (example, a movie) from the content delivery network 280. The content delivery network 280 may act as a cache for the information provided from the content repository 274. A particular user device may be directed to a particular content delivery network 280 depending on the specific content to be retrieved. An Internet uniform resource locator (URL) may be assigned to a movie or other content. Further, should one of the delivery networks 280 have heavy traffic, the content delivery network may be changed to provide faster service. In the interest of clarity and ease of understanding, throughout this disclosure reference will be made to delivering, downloading, transferring and/or receiving information, video, data, etc. by way of the content delivery network 280. However, persons of ordinary skill in the art will readily appreciate that information is actually delivered, downloaded, transferred, or received by one of the Internet-based servers in or associated with the content delivery network 280.

It should be appreciated that the content delivery network 280 may be operated by an external vendor. That is, the operator of the content delivery network 280 may not be the same as the operator of the remaining portions of the content processing system 102. To download files from the content delivery network 280, user devices 110, 112 may implement an Internet protocol stack with a defined application layer and possibly a download application provided by a content delivery network provider. In the illustrated example, file transfers are implemented using standard Internet protocols (file transfer protocol FTP), hyper text transfer protocol (HTTP), etc. Each file received by the user device may be checked for completeness and integrity and if a file is not intact, missing, and/or damaged portions of the files may be delivered or downloaded again. Alternatively, the entire file may be purged from the IRD and delivered or downloaded again.

The broadcast transport processing system 250 may provide various functions, including packetizing, multiplexing and modulating, and uplink frequency conversion. RF amplification may also be provided in the broadcast transport processing system 250.

Wireless delivery via the satellites 106, 108 may simultaneously include both files (e.g., movies, pre-recorded TV shows, games, software updates, asset files, etc.) and/or live content, data, programs and/or information. Wireless delivery via the satellites 106, 108 offers the opportunity to deliver, for example, a number of titles (e.g., movies, pre-recorded TV shows, etc.) to virtually any number of customers with a single broadcast. However, because of the limited channel capacity of the satellites 106, 108, the number of titles (i.e., assets) that can be provided during a particular time period is restricted.

In contrast, Internet-based delivery via the CDN 280 can support a large number of titles, each of which may have a narrower target audience. Further, Internet-based delivery is point-to-point (e.g., from an Internet-based content server to a user device 110, 112) thereby allowing each user of the user device 110, 112 to individually select titles. Allocation of a title to satellite and/or Internet-based delivery or content depends upon a target audience size and may be adjusted over time. For instance, a title having high demand (i.e., large initial audience) may initially be broadcast via the satellites 106, 108, then, over time, the title may be made available for download via the CDN 280 when the size of the target audience or the demand for the title is smaller. A title may simultaneously be broadcast via the satellites 106, 108 and be made available for download from the CDN 280 via the communication network 132. CAPs may also be delivered through the CDN 280.

In the example communication system 100, each asset (e.g., program, title, content, game, TV program, etc.) is pre-packetized and, optionally, pre-encrypted and then stored as a data file (i.e., an asset file). Subsequently, the asset file may be broadcast via the satellites 106, 108 and/or sent to the CDN 280 for download via the CDN 280 (i.e., Internet-based delivery). In particular, if the data file is broadcast via the satellites 106, 108, the data file forms at least one payload of a resultant satellite signal. Likewise, if the data file is available for download via the CDN 280, the data file forms at least one payload of a resultant Internet signal.

It will be readily apparent to persons of ordinary skill in the art that even though at least one payload of a resultant signal includes the data file regardless of broadcast technique (e.g., satellite or Internet), how the file is physically transmitted may differ. In particular, transmission of data via a transmission medium (e.g., satellite, Internet, etc.) comprises operations that are: (a) transmission medium independent and b) transmission medium dependent. For example, transmission protocols (e.g., transmission control protocol/Internet protocol (TCP/IP), user datagram protocol (UDP), encapsulation, etc.) and/or modulation techniques (e.g., quadrature amplitude modulation (QAM), forward error correction (FEC), etc.) used to transmit a file via Internet signals (e.g., over the Internet 122) may differ from those used via satellite (e.g., the satellites 106, 108). In other words, transmission protocols and/or modulation techniques are specific to physical communication paths, that is, they are dependent upon the physical media and/or transmission medium used to communicate the data. However, the content (e.g., a file representing a title) transported by any given transmission protocol and/or modulation is agnostic of the transmission protocol and/or modulation, that is, the content is transmission medium independent.

The same pre-packetized and, optionally, pre-encrypted, content data file that is broadcast via satellite may be available for download via Internet, and how the asset is stored, decoded and/or played back by the user devices 110 is independent of whether the program was received by the user devices 110 via satellite or Internet. Further, because the example content processing system 102 of FIG. 1 broadcasts a live program and a non-live program (e.g., a movie) by applying the same encoding, packetization, encryption, etc., how a program (live or non-live) is stored, decoded and/or played back by the user devices 110 is also independent of whether the program is live or not. Thus, user devices 110, 112 may handle the processing of content, programs and/or titles independent of the source(s) and/or type(s) of the content, programs and/or titles. In particular, example delivery configurations and signal processing for the example content delivery system of FIG. 2 are discussed in detail below.

Referring now to FIG. 3, the user device 110 may be one of any variety of devices, for example, a set-top box, a home media server, a home media center (HMC), a personal computer (PC) having a receiver card installed therein, etc. A display device 300 such as a television set, a computer monitor, a portable media player or the like may be coupled to the user device. The user device 110 may be an integrated receiver decoder, a satellite television receiver or the like for displaying and/or playback of received programming.

The receive antenna 140 (124 on a mobile device) receives signals conveying a modulated multiplexed bitstream from the satellites 106, 108. Within the receive antenna 140, the signals are coupled from a reflector and feed to a low-noise block (LNB) 302, which amplifies and frequency downconverts the received signals. The LNB 302 output is then provided to a receiver 304, which receives, demodulates, depacketizes, demultiplexes, decrypts and decodes the received signal to provide audio and video signals to the display device 300 or a recorder 306, or both. The memory device 306 may be implemented separately from or within the user device 110. The receiver 304 is responsive to user inputs to, for example, tune to a particular program.

To store received and/or recorded programs and/or assets, the memory device 306 may include any of a variety of storage devices such as a hard disk drive, DVR, or other types of memory devices. The memory device 306 may be used to store the packetized assets and/or programs received via the satellites 106, 108 and/or the CDN 280. In particular, the packets stored on memory device 306 may be the same encoded and, optionally, encrypted packets created by the content processing system 102 and transmitted via the satellites 106, 108 and/or made available for download via the CDN 280.

The memory device 306 may also be a device capable of recording information on, for instance, analog media such as videotape or computer readable digital media such as a hard disk drive (HDD), a digital versatile disc (DVD), a compact disc (CD) and/or any other suitable media.

To communicate with any of a variety of clients, media players, etc., the illustrated example the user device 110 includes one or more connection interface modules 308 (e.g., USB, serial port, Firewire, etc.). The connection interface module 306 may act as a network interface that implements, for example, an Ethernet interface.

Each user device 110 may connect to the communication network such as the Internet 122 via any of a variety of technologies, for instance, a voice-band and/or integrated services digital network (ISDN) modem connected to a conventional PSTN, a wireless broadband connection (e.g., IEEE 802.11b, 802.11g, etc.), a broadband wired connection (e.g., ADSL, cable modems, etc.), a wired Ethernet connection (e.g., local area network (LAN), wide area network (WAN), etc.), a leased transmission facility (e.g., a digital signal level 1 circuit (a.k.a. a DS1), a fractional-DS1, etc.), etc.

The user device 110 may also include a control module 310 that is used to control the operation of the various components within the user device. The control module 310 may control the recording of content on the storage device or control the deletion of content from the storage device based on content action codes received at the device through a CAP. This will be described further below.

A user interface 312 may, for example, be a set of push buttons or a remote control interface. The user interface 312 is used to make selections, input various data, and change the parameters of the user device 110. The user interface 312 may be used together with a graphical user interface displayed on the display device associated with the user device.

It should also be noted that the user devices 114 may be configured in a similar manner to those illustrated in FIG. 3 as reference number 110. Such devices may include an internal antenna rather than an external dish-type antenna that is illustrated in the fixed device as 140. Also, external antennas are possible such as a phased array antenna.

The recording device 306 may also be partitioned into a network partition 320 and a user partition 322. Different types of content or assets may be stored in the network partition 320 or the user partition 322. The content stored in the different partitions may relate to the tier of the content. The material identification may be stored together with the content. This will be further described below.

Referring now to FIG. 4, a conditional access packet or control word packet 400 is illustrated. As mentioned above, the control word packet or conditional access packet 400 may include various portions. The control word packet CWP or CAP may, for example, include a user device identifier 402 that is used to identify the particular user device or user devices to which the conditional access packet is directed. This may be used for selectively choosing which device is to stop recording or which device is to delete content from. This may be optional if deletion from all set top boxes is desired. Block 404 includes a material identification that is used to identify the particular content to stop recording or to delete. Block 406 consists of the content action code that is a code recognized by the set top box or storage device for initiating a stopping of the recording or initiating a deletion of the file.

Referring now to FIG. 5, a method for operating the present disclosure is illustrated for managing a storage device and the content therein. In step 510, a command to initiate a deletion or stopping recording in a storage device or user device having a storage device is entered. The command may be initiated automatically upon the detection of an error in the downloaded content. Errors may take many forms, including missing portions being broadcasted, wrong portions being broadcast, or the wrong content being broadcast with a wrong material identification.

The command to initiate management of the device such as deletion for stopping recording of a device may take place through the content management system 221 of FIG. 2. An operator may initiate the action or the action may be automatically performed upon the meeting of a condition.

In step 512, the material ID of the content to be managed, changed or deleted is determined. The material ID corresponds to the content material.

In step 514, the users that are to have the content recording or storage stopped or deleted are identified.

In step 516, a conditional access packet is generated using the material ID, the identification of users and through inserting a code. Corresponding to the desired action.

In step 518, the conditional access packets are communicated to the user device such as a storage device. The conditional access packet may be communicated in various ways, including over-the-air broadcasting, satellite broadcasting, or terrestrial broadcasting. Terrestrial broadcasting may take place using a broadband wire connection or a broadband wireless connection.

In step 520, the user device or the storage device receives the conditional access packet. As mentioned above, the conditional access packet may be received by one of the communication means, including satellite communication.

In step 522, the action desired by the code in the CAP is taken. For example, a deletion or recording stop at the set top box may be performed in response to the conditional access packet. Deleting the content may take place by completely deleting the content or disallowing access to the content by modifying the content or identifiers of the content ID so it is no longer accessible in this system. It should be noted that both discontinuing recording together with deleting a file may take place from the action.

Those skilled in the art can now appreciate from the foregoing description that the broad teachings of the disclosure can be implemented in a variety of forms. Therefore, while this disclosure includes particular examples, the true scope of the disclosure should not be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, the specification and the following claims. 

What is claimed is:
 1. A method comprising: communicating content to a storage device from a content processing system; generating a control command comprising a content action code; generating a conditional access packet comprising the control command; communicating the conditional access packet to a storage device; receiving the content and the conditional access packet; immediately controlling the storage device to manage the content in response to the content action code of the control command of the conditional access packet; and wherein controlling the storage device comprises ending receiving the content.
 2. A method comprising: communicating content to a storage device from a content processing system; generating a control command comprising a content action code; generating a conditional access packet comprising the control command; communicating the conditional access packet to a storage device; receiving the content and the conditional access packet; immediately controlling the storage device to manage the content in response to the content action code of the control command of the conditional access packet; and wherein controlling the storage device comprises ending receiving the content and deleting content from the storage device.
 3. A method comprising: communicating content to a storage device from a content processing system; generating a control command comprising a content action code; generating a conditional access packet comprising the control command; communicating the conditional access packet to a storage device; receiving the content and the conditional access packet; immediately controlling the storage device to manage the content in response to the content action code of the control command of the conditional access packet; and determining an error in transmission and generating the conditional access packet in response to determining the error.
 4. A communication system comprising: a user device comprising a storage device; a content processing system in communication with the storage device and communicating content to the storage device, generating a conditional access packet comprising a control command with a content action code, communicating the conditional access packet to a storage device; said user device receiving the content and the conditional access packet and immediately controlling the storage device to manage the content in response to the content action code of the control command of the conditional access packet; and wherein the user device controls the storage device by ending receiving the content.
 5. A communication system comprising: a user device comprising a storage device; a content processing system in communication with the storage device and communicating content to the storage device, generating a conditional access packet comprising a control command with a content action code, communicating the conditional access packet to a storage device; said user device receiving the content and the conditional access packet and immediately controlling the storage device to manage the content in response to the content action code of the control command of the conditional access packet; and wherein the user device controls the storage device by ending receiving the content and deleting content from the storage device.
 6. A communication system comprising: a user device comprising a storage device; a content processing system in communication with the storage device and communicating content to the storage device, generating a conditional access packet comprising a control command with a content action code, communicating the conditional access packet to a storage device; said user device receiving the content and the conditional access packet and immediately controlling the storage device to manage the content in response to the content action code of the control command of the conditional access packet; and wherein the content processing system generates the conditional access packet in response to an error in transmission. 